I had to rename the class because 'static' is a protected keyword, but forgot to rename the file

\SimpleSAML\Error\NoPassive is deprecated and all modules now raise \SimpleSAML\Module\saml\Error\NoPassive.
During this period of deprecation, we need to catch both flavours.

This fixes NoPassive-errors when using consentAdmin

This used to be like this, but got changed in 67dc1b15, which seems like an accidental action?
This takes care of #894